CVE-2026-25962: Markusproject Markus

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.4, MarkUs currently extracts zip files without any size or entry-count limits. For example, instructors can upload a zip file to provide an assignment configuration; students can upload a zip file for an assignment submission and indicate its contents should be extracted. This issue has been patched in version 2.9.4.

Affected products

• Markusproject Markus: before 2.9.4 (fixed in 2.9.4)

Published 2026-03-06. Last modified 2026-06-17.